30400532 has 36 divisors (see below), whose sum is σ = 57767220. Its totient is φ = 13986432.

The previous prime is 30400529. The next prime is 30400537. The reversal of 30400532 is 23500403.

It can be written as a sum of positive squares in 2 ways, for example, as 16532356 + 13868176 = 4066^2 + 3724^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30400532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30400537) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53144 + ... + 53712.

It is an arithmetic number, because the mean of its divisors is an integer number (1604645).

Almost surely, 2^30400532 is an apocalyptic number.

It is an amenable number.

30400532 is a deficient number, since it is larger than the sum of its proper divisors (27366688).

30400532 is a wasteful number, since it uses less digits than its factorization.

30400532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 30400532 is about 5513.6677447957. The cubic root of 30400532 is about 312.0999707035.

Adding to 30400532 its reverse (23500403), we get a palindrome (53900935).

The spelling of 30400532 in words is "thirty million, four hundred thousand, five hundred thirty-two".